Zac Efron is dropping friends – but not his drug habit

After Zac Efron got into another entirely unbelievable situation by being “beat up by transients” in LA last week (read: a drug deal gone awry), friends were starting to get concerned that he’s on the bad shit again, and probably for good reason. However, apparently they’re all afraid to bring this up to him because anyone who does question his sobriety is immediately iced out of his life.

TMZ has learned the actor’s friends are scared to broach the subject of Zac’s sobriety … because not only will they be ignored — but they say anyone who makes an attempt is cut from Efron’s life.

We’re told Zac refuses to believe he’s on a destructive path … and one of his friends tells us they think he could become the next Cory Monteith if he doesn’t get help.

Oh yeah, I forgot he never actually went to rehab last year – he went to “a friend’s house” for “private therapy”. Okay, bro – time to get your coke habit under control. You’d think having to get your jaw wired shut would have been an impetus towards hitting rock bottom and getting your life together, but I guess not…